html,body{
    width: 100%;
    height: 100%;
    margin: 0px;
    text-align: center;
    font-size: 0px;
}

#root{
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

#root::before{
    display: inline-block;
    vertical-align: middle;
    width: 0px;
    height: 100%;
    content: "";
}
